EFFECTIVELY REDUCES DARK SPOT AND PREVENTS THEIR RE-APPEARANCE. Melanin is a natural pigment that gives color to skin. Exposure to sunlight, hormonal influences and aging can cause an increase in melanin production and trigger hyperpigmentation. Hyperpigmentation appears as dark patches and age spots (also known as sun spots) that make skin look uneven. Eucerin Even Pigment Perfector Dual Serum brings together two serums that work in different ways: - Thiamidol: an effective and patented ingredient that acts at the root cause of hyperpigmentation is clinically proven to reduce hyperpigmentation, preventing its re-appearance with regular usage - Concentrated Hyaluronic Acid: one of skin’s most effective moisturizing substances helps skin to attract and retain moisture The light emulsion is clinically and dermatologically proven to reduce dark spots and prevent their re-appearance while renewing skin’s look. First results are visible after two weeks and improve continuously with regular use. Skin is smooth and looks renewed, even and radiant.